package dead.queue.mt.demo.config;


import dead.queue.mt.demo.entity.MessageNameConfig;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class DirectRabbitConfig {
    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory)
    {
        final RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);

        //设置Json转换器
        rabbitTemplate.setMessageConverter(jsonMessageConverter());

        return rabbitTemplate;
    }

    /**
     * Json转换器
     */
    @Bean
    public Jackson2JsonMessageConverter jsonMessageConverter() {
        return new Jackson2JsonMessageConverter();
    }



    @Bean
    public Queue dlxQueue() {
        return new Queue(MessageNameConfig.testDeadLetterQueueName);
    }

    @Bean
    public DirectExchange dlxExchange() {
        return new DirectExchange(MessageNameConfig.testDeadLetterExchangeName);
    }

    @Bean
    public Binding binding() {
        return BindingBuilder.bind(dlxQueue())
                .to(dlxExchange())
                .with(MessageNameConfig.testDeadLetterRoutingKey);
    }

    @Bean
    public Queue TestDirectQueue() {
        // durable:是否持久化,默认是false,持久化队列：会被存储在磁盘上，当消息代理重启时仍然存在，暂存队列：当前连接有效
        // exclusive:默认也是false，只能被当前创建的连接使用，而且当连接关闭后队列即被删除。此参考优先级高于durable
        // autoDelete:是否自动删除，当没有生产者或者消费者使用此队列，该队列会自动删除。
        //   return new Queue("TestDirectQueue",true,true,false);
        //一般设置一下队列的持久化就好,其余两个就是默认false
        Map<String,Object> arguments = new HashMap<>(2);
        // 绑定该队列到私信交换机
        arguments.put("x-dead-letter-exchange", MessageNameConfig.testDeadLetterExchangeName);
        arguments.put("x-dead-letter-routing-key", MessageNameConfig.testDeadLetterRoutingKey);

        return new Queue(MessageNameConfig.testQueueName,true,false, false, arguments);
    }

    //Direct交换机 起名：TestDirectExchange
    @Bean
    DirectExchange TestDirectExchange() {
        //  return new DirectExchange("TestDirectExchange",true,true);
        return new DirectExchange(MessageNameConfig.testExchangeName,true,false);
    }

    //绑定  将队列和交换机绑定, 并设置用于匹配键：TestDirectRouting
    @Bean
    Binding bindingDirect() {
        return BindingBuilder.bind(TestDirectQueue()).to(TestDirectExchange()).with(MessageNameConfig.testRoutingKey);
    }
}
